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品种资源研究,对于作物育种亲本选配是十分重要的。通常依据形态,生态、生理和发育性状等的差异进行分类,往往不能反映与产量有关的遗传差异。七十年代以来,多元分析法逐渐广泛地应用于生物科学,Hassoim,S.H.Goodman,M.M.和Timothy,D.H.(1977)曾收集世界各地的分枝小粟资源,用多元分析法研究其地理分布。在国内,刘来福,毛盛贤等首先应用多元分析法于小麦杂交育种的亲本选配研究。本研究以此测定冬小麦数量性状的遗传距离,作为对品种间遗传差异的度量,并根据遗传距离的大小进行系统聚类,以探索一种新的、以数量性状遗传差异聚类为依根的品种资源分类方法。
Research on variety resources is of great importance to the matching of crop breeding parents. The classification is usually based on the differences in morphology, ecology, physiology and developmental traits, and often does not reflect the genetic differences related to yield. Since the 1970s, multivariate analysis has been widely applied to the biological sciences. Hassoim, S.H. Goodman, M.M. and Timothy D.H. (1977) have collected the resources of Pinctada all over the world and studied the geographical distribution by multivariate analysis. In China, Liu Laifu and Mao Shengxian first used multivariate analysis to study the parental selection of crossbreeding in wheat. In this study, we determined the genetic distance of quantitative traits in winter wheat as a measure of the genetic differences among cultivars, and systematically clustered according to the genetic distance to explore a new genetic variation clustering based on quantitative traits Variety classification methods.